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Add base geometric types

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Clutter should provide some more basic geometric types - Point, Size,
Rect - so that we can use them in properties and accessors.
This commit is contained in:
Emmanuele Bassi 2012-03-30 18:22:04 +01:00
parent d77ca7f7b8
commit 61f17e345a
5 changed files with 1192 additions and 303 deletions
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1
clutter/Makefile.am
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@ -138,6 +138,7 @@ source_c = \
$(srcdir)/clutter-animation.c \
$(srcdir)/clutter-animator.c \
$(srcdir)/clutter-backend.c \
$(srcdir)/clutter-base-types.c \
$(srcdir)/clutter-bezier.c \
$(srcdir)/clutter-bind-constraint.c \
$(srcdir)/clutter-binding-pool.c \

299
clutter/clutter-actor.c
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@ -13272,247 +13272,6 @@ clutter_actor_transform_stage_point (ClutterActor *self,
return TRUE;
}
/*
* ClutterGeometry
*/
static ClutterGeometry*
clutter_geometry_copy (const ClutterGeometry *geometry)
{
return g_slice_dup (ClutterGeometry, geometry);
}
static void
clutter_geometry_free (ClutterGeometry *geometry)
{
if (G_LIKELY (geometry != NULL))
g_slice_free (ClutterGeometry, geometry);
}
/**
* clutter_geometry_union:
* @geometry_a: a #ClutterGeometry
* @geometry_b: another #ClutterGeometry
* @result: (out): location to store the result
*
* Find the union of two rectangles represented as #ClutterGeometry.
*
* Since: 1.4
*/
void
clutter_geometry_union (const ClutterGeometry *geometry_a,
const ClutterGeometry *geometry_b,
ClutterGeometry *result)
{
/* We don't try to handle rectangles that can't be represented
* as a signed integer box */
gint x_1 = MIN (geometry_a->x, geometry_b->x);
gint y_1 = MIN (geometry_a->y, geometry_b->y);
gint x_2 = MAX (geometry_a->x + (gint)geometry_a->width,
geometry_b->x + (gint)geometry_b->width);
gint y_2 = MAX (geometry_a->y + (gint)geometry_a->height,
geometry_b->y + (gint)geometry_b->height);
result->x = x_1;
result->y = y_1;
result->width = x_2 - x_1;
result->height = y_2 - y_1;
}
/**
* clutter_geometry_intersects:
* @geometry0: The first geometry to test
* @geometry1: The second geometry to test
*
* Determines if @geometry0 and geometry1 intersect returning %TRUE if
* they do else %FALSE.
*
* Return value: %TRUE of @geometry0 and geometry1 intersect else
* %FALSE.
*
* Since: 1.4
*/
gboolean
clutter_geometry_intersects (const ClutterGeometry *geometry0,
const ClutterGeometry *geometry1)
{
if (geometry1->x >= (geometry0->x + (gint)geometry0->width) ||
geometry1->y >= (geometry0->y + (gint)geometry0->height) ||
(geometry1->x + (gint)geometry1->width) <= geometry0->x ||
(geometry1->y + (gint)geometry1->height) <= geometry0->y)
return FALSE;
else
return TRUE;
}
static gboolean
clutter_geometry_progress (const GValue *a,
const GValue *b,
gdouble progress,
GValue *retval)
{
const ClutterGeometry *a_geom = g_value_get_boxed (a);
const ClutterGeometry *b_geom = g_value_get_boxed (b);
ClutterGeometry res = { 0, };
gint a_width = a_geom->width;
gint b_width = b_geom->width;
gint a_height = a_geom->height;
gint b_height = b_geom->height;
res.x = a_geom->x + (b_geom->x - a_geom->x) * progress;
res.y = a_geom->y + (b_geom->y - a_geom->y) * progress;
res.width = a_width + (b_width - a_width) * progress;
res.height = a_height + (b_height - a_height) * progress;
g_value_set_boxed (retval, &res);
return TRUE;
}
G_DEFINE_BOXED_TYPE_WITH_CODE (ClutterGeometry, clutter_geometry,
clutter_geometry_copy,
clutter_geometry_free,
CLUTTER_REGISTER_INTERVAL_PROGRESS (clutter_geometry_progress));
/*
* ClutterVertices
*/
/**
* clutter_vertex_new:
* @x: X coordinate
* @y: Y coordinate
* @z: Z coordinate
*
* Creates a new #ClutterVertex for the point in 3D space
* identified by the 3 coordinates @x, @y, @z
*
* Return value: the newly allocate #ClutterVertex. Use
* clutter_vertex_free() to free the resources
*
* Since: 1.0
*/
ClutterVertex *
clutter_vertex_new (gfloat x,
gfloat y,
gfloat z)
{
ClutterVertex *vertex;
vertex = g_slice_new (ClutterVertex);
clutter_vertex_init (vertex, x, y, z);
return vertex;
}
/**
* clutter_vertex_init:
* @vertex: a #ClutterVertex
* @x: X coordinate
* @y: Y coordinate
* @z: Z coordinate
*
* Initializes @vertex with the given coordinates.
*
* Since: 1.10
*/
void
clutter_vertex_init (ClutterVertex *vertex,
gfloat x,
gfloat y,
gfloat z)
{
g_return_if_fail (vertex != NULL);
vertex->x = x;
vertex->y = y;
vertex->z = z;
}
/**
* clutter_vertex_copy:
* @vertex: a #ClutterVertex
*
* Copies @vertex
*
* Return value: a newly allocated copy of #ClutterVertex. Use
* clutter_vertex_free() to free the allocated resources
*
* Since: 1.0
*/
ClutterVertex *
clutter_vertex_copy (const ClutterVertex *vertex)
{
if (G_LIKELY (vertex != NULL))
return g_slice_dup (ClutterVertex, vertex);
return NULL;
}
/**
* clutter_vertex_free:
* @vertex: a #ClutterVertex
*
* Frees a #ClutterVertex allocated using clutter_vertex_copy()
*
* Since: 1.0
*/
void
clutter_vertex_free (ClutterVertex *vertex)
{
if (G_UNLIKELY (vertex != NULL))
g_slice_free (ClutterVertex, vertex);
}
/**
* clutter_vertex_equal:
* @vertex_a: a #ClutterVertex
* @vertex_b: a #ClutterVertex
*
* Compares @vertex_a and @vertex_b for equality
*
* Return value: %TRUE if the passed #ClutterVertex are equal
*
* Since: 1.0
*/
gboolean
clutter_vertex_equal (const ClutterVertex *vertex_a,
const ClutterVertex *vertex_b)
{
g_return_val_if_fail (vertex_a != NULL && vertex_b != NULL, FALSE);
if (vertex_a == vertex_b)
return TRUE;
return vertex_a->x == vertex_b->x &&
vertex_a->y == vertex_b->y &&
vertex_a->z == vertex_b->z;
}
static gboolean
clutter_vertex_progress (const GValue *a,
const GValue *b,
gdouble progress,
GValue *retval)
{
const ClutterVertex *av = g_value_get_boxed (a);
const ClutterVertex *bv = g_value_get_boxed (b);
ClutterVertex res = { 0, };
res.x = av->x + (bv->x - av->x) * progress;
res.y = av->y + (bv->y - av->y) * progress;
res.z = av->z + (bv->z - av->z) * progress;
g_value_set_boxed (retval, &res);
return TRUE;
}
G_DEFINE_BOXED_TYPE_WITH_CODE (ClutterVertex, clutter_vertex,
clutter_vertex_copy,
clutter_vertex_free,
CLUTTER_REGISTER_INTERVAL_PROGRESS (clutter_vertex_progress));
/**
* clutter_actor_is_rotated:
* @self: a #ClutterActor
@ -16237,64 +15996,6 @@ clutter_actor_get_y_align (ClutterActor *self)
return _clutter_actor_get_layout_info_or_defaults (self)->y_align;
}
/**
* clutter_margin_new:
*
* Creates a new #ClutterMargin.
*
* Return value: (transfer full): a newly allocated #ClutterMargin. Use
* clutter_margin_free() to free the resources associated with it when
* done.
*
* Since: 1.10
*/
ClutterMargin *
clutter_margin_new (void)
{
return g_slice_new0 (ClutterMargin);
}
/**
* clutter_margin_copy:
* @margin_: a #ClutterMargin
*
* Creates a new #ClutterMargin and copies the contents of @margin_ into
* the newly created structure.
*
* Return value: (transfer full): a copy of the #ClutterMargin.
*
* Since: 1.10
*/
ClutterMargin *
clutter_margin_copy (const ClutterMargin *margin_)
{
if (G_LIKELY (margin_ != NULL))
return g_slice_dup (ClutterMargin, margin_);
return NULL;
}
/**
* clutter_margin_free:
* @margin_: a #ClutterMargin
*
* Frees the resources allocated by clutter_margin_new() and
* clutter_margin_copy().
*
* Since: 1.10
*/
void
clutter_margin_free (ClutterMargin *margin_)
{
if (G_LIKELY (margin_ != NULL))
g_slice_free (ClutterMargin, margin_);
}
G_DEFINE_BOXED_TYPE (ClutterMargin, clutter_margin,
clutter_margin_copy,
clutter_margin_free)
/**
* clutter_actor_set_margin:
* @self: a #ClutterActor

1027
clutter/clutter-base-types.c Normal file
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138
clutter/clutter-types.h
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@ -43,6 +43,9 @@ G_BEGIN_DECLS
#define CLUTTER_TYPE_PAINT_VOLUME (clutter_paint_volume_get_type ())
#define CLUTTER_TYPE_PERSPECTIVE (clutter_perspective_get_type ())
#define CLUTTER_TYPE_VERTEX (clutter_vertex_get_type ())
#define CLUTTER_TYPE_POINT (clutter_point_get_type ())
#define CLUTTER_TYPE_SIZE (clutter_size_get_type ())
#define CLUTTER_TYPE_RECT (clutter_rect_get_type ())
typedef struct _ClutterActor ClutterActor;
@ -73,15 +76,18 @@ typedef struct _ClutterPath ClutterPath;
typedef struct _ClutterActorBox ClutterActorBox;
typedef struct _ClutterColor ClutterColor;
typedef struct _ClutterFog ClutterFog;
typedef struct _ClutterGeometry ClutterGeometry;
typedef struct _ClutterKnot ClutterKnot;
typedef struct _ClutterMargin ClutterMargin;
typedef struct _ClutterPerspective ClutterPerspective;
typedef struct _ClutterPoint ClutterPoint;
typedef struct _ClutterRect ClutterRect;
typedef struct _ClutterSize ClutterSize;
typedef struct _ClutterVertex ClutterVertex;
typedef struct _ClutterBehaviour ClutterBehaviour;
typedef struct _ClutterShader ClutterShader;
typedef struct _ClutterFog ClutterFog; /* deprecated */
typedef struct _ClutterBehaviour ClutterBehaviour; /* deprecated */
typedef struct _ClutterShader ClutterShader; /* deprecated */
typedef union _ClutterEvent ClutterEvent;
@ -105,13 +111,137 @@ typedef union _ClutterEvent ClutterEvent;
*/
typedef struct _ClutterPaintVolume ClutterPaintVolume;
/**
* ClutterPoint:
* @x: X coordinate, in pixels
* @y: Y coordinate, in pixels
*
* A point in 2D space.
*
* Since: 1.12
*/
struct _ClutterPoint
{
float x;
float y;
};
#define CLUTTER_POINT_INIT(x,y) { (x), (y) }
#define CLUTTER_POINT_INIT_ZERO CLUTTER_POINT_INIT (0.f, 0.f)
GType clutter_point_get_type (void) G_GNUC_CONST;
ClutterPoint * clutter_point_new (void);
ClutterPoint * clutter_point_init (ClutterPoint *point,
float x,
float y);
ClutterPoint * clutter_point_copy (const ClutterPoint *point);
void clutter_point_free (ClutterPoint *point);
gboolean clutter_point_equals (const ClutterPoint *a,
const ClutterPoint *b);
/**
* ClutterSize:
* @width: the width, in pixels
* @height: the height, in pixels
*
* A size, in 2D space.
*
* Since: 1.12
*/
struct _ClutterSize
{
float width;
float height;
};
#define CLUTTER_SIZE_INIT(width,height) { (width), (height) }
#define CLUTTER_SIZE_INIT_ZERO CLUTTER_SIZE_INIT (0.f, 0.f)
GType clutter_size_get_type (void) G_GNUC_CONST;
ClutterSize * clutter_size_new (void);
ClutterSize * clutter_size_init (ClutterSize *size,
float width,
float height);
ClutterSize * clutter_size_copy (const ClutterSize *size);
void clutter_size_free (ClutterSize *size);
gboolean clutter_size_equals (const ClutterSize *a,
const ClutterSize *b);
/**
* ClutterRect:
* @origin: the origin of the rectangle
* @size: the size of the rectangle
*
* The location and size of a rectangle.
*
* The width and height of a #ClutterRect can be negative; Clutter considers
* a rectangle with an origin of [ 0.0, 0.0 ] and a size of [ 10.0, 10.0 ] to
* be equivalent to a rectangle with origin of [ 10.0, 10.0 ] and size of
* [ -10.0, -10.0 ].
*
* Application code can normalize rectangles using clutter_rect_normalize():
* this function will ensure that the width and height of a #ClutterRect are
* positive values. All functions taking a #ClutterRect as an argument will
* implicitly normalize it before computing eventual results. For this reason
* it is safer to access the contents of a #ClutterRect by using the provided
* API at all times, instead of directly accessing the structure members.
*
* Since: 1.12
*/
struct _ClutterRect
{
ClutterPoint origin;
ClutterSize size;
};
#define CLUTTER_RECT_INIT(x,y,width,height) { { (x), (y) }, { (width), (height) } }
#define CLUTTER_RECT_INIT_ZERO CLUTTER_RECT_INIT (0.f, 0.f, 0.f, 0.f)
GType clutter_rect_get_type (void) G_GNUC_CONST;
ClutterRect * clutter_rect_new (void);
ClutterRect * clutter_rect_init (ClutterRect *rect,
float x,
float y,
float width,
float height);
ClutterRect * clutter_rect_copy (const ClutterRect *rect);
void clutter_rect_free (ClutterRect *rect);
gboolean clutter_rect_equals (ClutterRect *a,
ClutterRect *b);
ClutterRect * clutter_rect_normalize (ClutterRect *rect);
void clutter_rect_get_center (ClutterRect *rect,
ClutterPoint *center);
gboolean clutter_rect_contains_point (ClutterRect *rect,
ClutterPoint *point);
void clutter_rect_union (ClutterRect *a,
ClutterRect *b,
ClutterRect *res);
gboolean clutter_rect_intersection (ClutterRect *a,
ClutterRect *b,
ClutterRect *res);
void clutter_rect_offset (ClutterRect *rect,
float d_x,
float d_y);
void clutter_rect_inset (ClutterRect *rect,
float d_x,
float d_y);
void clutter_rect_clamp_to_pixel (ClutterRect *rect);
float clutter_rect_get_x (ClutterRect *rect);
float clutter_rect_get_y (ClutterRect *rect);
float clutter_rect_get_width (ClutterRect *rect);
float clutter_rect_get_height (ClutterRect *rect);
/**
* ClutterVertex:
* @x: X coordinate of the vertex
* @y: Y coordinate of the vertex
* @z: Z coordinate of the vertex
*
* Vertex of an actor in 3D space, expressed in pixels
* A point in 3D space, expressed in pixels
*
* Since: 0.4
*/

30
clutter/clutter.symbols
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@ -977,11 +977,35 @@ clutter_pick_debug_flags DATA
clutter_pipeline_node_get_type
clutter_pipeline_node_new
clutter_pick_mode_get_type
clutter_point_copy
clutter_point_equals
clutter_point_free
clutter_point_get_type
clutter_point_init
clutter_point_new
clutter_profile_flags DATA
clutter_property_transition_get_property_name
clutter_property_transition_get_type
clutter_property_transition_new
clutter_property_transition_set_property_name
clutter_rect_clamp_to_pixel
clutter_rect_contains_point
clutter_rect_copy
clutter_rect_equals
clutter_rect_free
clutter_rect_get_center
clutter_rect_get_height
clutter_rect_get_type
clutter_rect_get_width
clutter_rect_get_x
clutter_rect_get_y
clutter_rect_init
clutter_rect_inset
clutter_rect_intersection
clutter_rect_new
clutter_rect_normalize
clutter_rect_offset
clutter_rect_union
clutter_rectangle_get_border_color
clutter_rectangle_get_border_width
clutter_rectangle_get_color
@ -1071,6 +1095,12 @@ clutter_shader_set_is_enabled
clutter_shader_set_uniform
clutter_shader_set_vertex_source
clutter_shader_type_get_type
clutter_size_copy
clutter_size_equals
clutter_size_free
clutter_size_get_type
clutter_size_init
clutter_size_new
clutter_snap_constraint_get_edges
clutter_snap_constraint_get_offset
clutter_snap_constraint_get_source